EP 2624495 A1 20130807 - A method for retransmission of reference signals in uplink, and network devices therefor
Title (en)
A method for retransmission of reference signals in uplink, and network devices therefor
Title (de)
Verfahren zur Neuübertragung von Uplink-Referenzsignalen und Netzwerkvorrichtungen dafür
Title (fr)
Procédé de retransmission de signaux de référence en liaison montante et dispositifs de réseau correspondants
Publication
Application
Priority
EP 12305115 A 20120131
Abstract (en)
The invention concerns a method for retransmission of reference signals (DMRS3, DMRS4) in uplink from two network devices (UE14, UE23) to a further network device (BS1) in case of unsuccessful reception of said reference signals (DMRS1, DMRS2) in the further network device (BS1), wherein sequences for the retransmission of the reference signals (DMRS3, DMRS4) in uplink from said two network devices (UE14, UE23) are determined that lead to an improved reception in the further network device (BS1) of the retransmitted reference signals (DMRS3, DMRS4), said sequences for the retransmission of the reference signals (DMRS3, DMRS4) are signaled to said two network devices (UE14, UE23) using information which is directly signaled in downlink control information fields (ULRG1, ULRG2) and using changes of the information in the downlink control information fields (ULRG1, ULRG2) with respect to information in previous downlink control information fields (ULTG1, ULTG2), and network devices therefor.
IPC 8 full level
H04L 1/16 (2006.01); H04L 23/02 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP US)
H04J 13/0074 (2013.01 - EP); H04L 1/1692 (2013.01 - EP US); H04L 5/0035 (2013.01 - EP); H04L 23/02 (2013.01 - EP); H04L 27/2613 (2013.01 - EP US); H04L 5/0091 (2013.01 - EP)
Citation (search report)
- [A] EP 2056515 A1 20090506 - NOKIA SIEMENS NETWORKS OY [FI]
- [XYI] HUAWEI: "CS and OCC signaling for UL DM RS", 3GPP DRAFT; R1-104301, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, vol. RAN WG1, 17 August 2010 (2010-08-17), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050449660
- [Y] MOTOROLA MOBILITY: "Views on UL CoMP Enhancements and Standardization Impact", 3GPP DRAFT; R1-113263 - UL COMP ENHANCEMENTS STANDARDIZATION IMPACT, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, vol. RAN WG1, 5 October 2011 (2011-10-05), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050538523
- [A] PANASONIC: "OCC and CS for UL DMRS in SU/MU-MIMO", 3GPP DRAFT; R1-104906, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, vol. RAN WG1, 17 August 2010 (2010-08-17), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050450053
- [A] ALCATEL-LUCENT SBELL ET AL: "DMRS CSI selection in Non-adaptive retransmission", 3GPP DRAFT; R1-104403, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, vol. RAN WG1, no. Madrid, Spain; 20100823, 17 August 2010 (2010-08-17), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050449743
- [A] CATT: "UL DMRS signaling with OCC", 3GPP DRAFT; R1-104334, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, vol. RAN WG1, 17 August 2010 (2010-08-17), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050449691
- [A] HUAWEI: "Issues of Type 2 Relay", 3GPP DRAFT; R1-093044, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE, 18 August 2009 (2009-08-18), SOPHIA-ANTIPOLIS CEDEX ; FRANCE, XP050351436
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12305115 A 20120131